PDF Password Protector
Add password protection to a PDF online for free. Secure sensitive files, control basic permissions, and download the protected PDF in seconds.
Protection Summary
PDF password protection adds an open password that must be entered before the document can be viewed. You can also limit actions like printing, copying, or editing based on the permissions you choose.
This tool is best for securing files you already control. Use a strong password, store it safely, and share it only with people who should have access.
No PDF selected yet.
How to use
Upload your PDF
Select the PDF you want to protect from unauthorized viewing or editing.
Set and confirm password
Enter the password you want to require when the PDF is opened, then choose any permission limits you want to apply.
Protect and download
Click protect, wait a moment for processing, and download the secured PDF file.
What is PDF password protection?
PDF password protection adds encryption to a PDF so the file cannot be opened without the correct password. This helps protect private reports, contracts, invoices, and other sensitive documents from unauthorized access.
Why secure PDF files?
Many PDFs contain information that should not be freely accessible, such as legal documents, financial records, or internal business material. Adding a password reduces the risk of casual access if the file is shared, forwarded, or stored in the wrong place.
Types of PDF security
PDF security usually includes an open password, which controls whether the file can be viewed at all, and optional permissions, which can restrict actions like printing, editing, or copying text. Stronger workflows may also include separate owner passwords and broader document control policies.
Best practices for document security
- Use a strong password with a mix of letters, numbers, and symbols.
- Share the password separately from the protected file whenever possible.
- Apply permissions only when they match your document-sharing needs.
- Keep an original unprotected backup in a secure location.
Features
Add open password
Require a password before the PDF can be viewed.
Restrict editing and printing
Set basic permissions for print, modify, and copy access.
Fast processing
Protect PDFs quickly and download the secured result in seconds.
Mobile responsive
Protect PDFs from desktop or mobile browsers without installing software.
Advanced feature ideas
- Set permission presets for copy, print, and document assembly.
- Batch protection for multiple PDFs at once.
- Encryption level selection for different compatibility needs.
- Password strength checker for safer document protection.
FAQ
How do I add a password to a PDF?
Upload your file, set a password, and click protect.
Is this tool free?
Yes.
Can I restrict editing?
Yes, with advanced permissions.
Is my file secure?
Yes.